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Pentatonix - Evolution of Mitch Grassi

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ProjectHEAL - Mitch Grassi's Performance (170516)

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Mitch Grassi's High Notes | Studio vs Live

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Pentatonix With Dogs

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Mitch Grassi's RARE Performances

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Mitch Grassi Being The Actual Definition of "Adorable"

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Vocal Coach Reacts to Superfruit - Frozen Medley ft. Kirstin Maldonado

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The Untold Truth Of Pentatonix's Mitch Grassi